If the weekly people get it on each paycheck you need an add to gross calc applicable to all taxes and credit the checking Acct. 
select tax type none, add to gross, % of gross rate of 4%

for the mgt accrual you need a separate calc that credits vacation payable. The maximums should be set up for dollars per year but the max amount goes on the employee along with their rate unless they all get the same amount then it can go on calc